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Finding the Fourth Proportional to 312,417.69, 468,553.43 and 87,799.59

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Solution

The fourth proportional to 312,417.69, 468,553.43 and 87,799.59 is: 131,678.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,417.69 : 468,553.43 = 87,799.59 : x
  2. Step 2: Convert to fraction form
    312,417.69/468,553.43 = 87,799.59/x
  3. Step 3: Cross multiply
    312,417.69x = 468,553.43 × 87,799.59
  4. Step 4: Simplify right side
    312,417.69x = 41,138,798,608.10
  5. Step 5: Solve for x
    x = 41,138,798,608.10/312,417.69
  6. Step 6: Final answer
    x = 131,678.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.